Следующий код

#include     
using namespace std;

int main()
{
    const char* const foo = "f";
    const char bar[] = "b";
    cout < "sizeof(string literal) = " < sizeof( "f" ) < endl;
    cout < "sizeof(const char* const) = " < sizeof( foo ) < endl;
    cout < "sizeof(const char[]) = " < sizeof( bar ) < endl;
}